Here comes the result of my first speed guesses. The 4165 firmware uses a different speed encoding that all previous LG firmwares. The speeds are not verified on a real drive yet.

```
Media Code Speed Edit V 1.0.5.7 SE
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Firmware: GSA-4165MAIN REV LVL DL04
Bootcode:
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Overall supported media types: 254
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DVD+R9 supported media types: 6
DVD+R supported media types: 66
DVD+RW supported media types: 28
DVD-R9 supported media types: 1
DVD-R supported media types: 113
DVD-RW supported media types: 40
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DVD+R9 supported media types: 6
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INFOME D01-000 2.4x
MKM 001-000 6x,4x,2.4x
PHILIPS CD2-000 2.4x
RICOHJPN D00-001 4x,2.4x
RITEK D01-001 2.4x
RITEK S01-001 2.4x
DVD+R supported media types: 66
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001-000 2.4x
001-000 8x,4x
AML 001-000 4x,2.4x
AML 002-000 8x,4x
BEALL P0 001-000 2.4x
BeAll000 P40-000 4x,2.4x
BeAll000 P80-000 8x,4x
BeAll000 PG0-000 16x,12x,8x,4x
CMC MAG E01-000 8x,4x
CMC MAG F01-000 4x,2.4x
CMC MAG M01-000 16x,12x,8x,4x
CMC MAG R01-000 2.4x
DAXON AZ2-000 8x,4x
DAXON AZ3-000 16x,12x,8x,4x
DEFAULT 16 -000 16x,12x,8x,4x
DEFAULT 2_4-000 2.4x
DEFAULT 4 -000 4x,2.4x
DEFAULT 8 -000 8x,4x
INFODISC R20-000 8x,4x
INFOME R30-000 16x,12x,8x,4x
LGEP16 001-000 16x,12x,8x,4x
MAXELL 001-000 4x,2.4x
MAXELL 002-000 12x,8x,4x
MAXELL 003-000 16x,12x,8x,4x
MBIPG101 R04-001 8x,4x
MBIPG101 R05-001 16x,12x,8x,4x
MCC..... 001-000 2.4x
MCC..... 002-000 4x,2.4x
MCC..... 003-000 12x,8x,4x
MCC..... 004-000 16x,12x,8x,4x
NANYA CHX-000 8x,4x
NANYA CLX-000 8x,4x
NSD R40-000 16x,12x,8x,4x
OPTODISC 001-000 8x,4x
OPTODISC OP1-001 2.4x
OPTODISC OR8-000 8x,4x
OPTODISC R16-000 16x,12x,8x,4x
PHILIPS C08-000 8x,4x
PHILIPS C16-000 16x,12x,8x,4x
PHILIPS C16-001 16x,12x,8x,4x
PRODISC R01-001 2.4x
PRODISC R02-000 4x,2.4x
PRODISC R03-003 8x,4x
PRODISC R04-004 16x,12x,8x,4x
Philips 081-000 8x,4x
Plasmon2 C01-000 16x,12x,8x,4x
RICOHJPN R00-001 2.4x
RICOHJPN R01-002 4x,2.4x
RICOHJPN R02-003 12x,8x,4x
RICOHJPN R03-004 16x,12x,8x,4x
RITEK M02-001 4x,2.4x
RITEK R01-001 2.4x
RITEK R02-001 4x,2.4x
RITEK R03-001 8x,4x
RITEK R03-002 8x,4x
RITEK R04-001 16x,12x,8x,4x
SONY D01-000 4x,2.4x
SONY D11-000 8x,4x
SONY D21-000 16x,12x,8x,4x
TDK 001-000 4x,2.4x
TDK 002-000 12x,8x,4x
TDK 003-000 16x,12x,8x,4x
YUDEN000 T01-000 4x,2.4x
YUDEN000 T01-001 4x,2.4x
YUDEN000 T02-000 12x,8x,4x
YUDEN000 T03-000 16x,12x,8x,4x
DVD+RW supported media types: 28
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CMC MAG W01-000 2.4x
CMC MAG W02-000 4x,2.4x
CMC MAG W03-000 8x,4x
DAXON D42-000 4x,2.4x
DEFAULT 2_4-000 2.4x
DEFAULT 4 -000 4x,2.4x
DEFAULT 8 -000 8x,4x
INFODISC A01-001 2.4x
INFODISC A10-001 4x,2.4x
MBIPG101 W04-000 4x,2.4x
MCC..... A01-000 2.4x
MKM A02-000 4x,2.4x
MKM A03-000 8x,4x
NANYA DRW-000 4x,2.4x
OPTODISC OP1-001 2.4x
OPTODISC OP4-001 4x,2.4x
PHILIPS 010-049 2.4x
PHILIPS 041-000 4x,2.4x
PHILIPS RW8-000 8x,4x
PRODISC W01-002 2.4x
PRODISC W02-000 4x,2.4x
RICOHJPN W01-001 2.4x
RICOHJPN W11-001 4x,2.4x
RICOHJPN W21-001 8x,4x
RITEK 001-001 4x,2.4x
RITEK 004-048 4x,2.4x
SENTINEL W02-000 4x,2.4x
SONY S11-000 4x,2.4x
DVD-R9 supported media types: 1
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MKM 01RD30 4x,2x
DVD-R supported media types: 113
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1FUJIFILM 1x
AML 4x,2x
AN32 4x,2x
BEAll G001 1x
BeAll G16001 16x,12x,8x,4x
BeAll G40001 4x,2x
BeAllG00001 1x
CMC MAG. 1x
CMC MAG. AE1 8x,4x
CMC MAG. AF1 4x,2x
CMC MAG. AM3 16x,12x,8x,4x
CMC00RG200 1x
CMC00RG300 1x
DATA TRACK 4x,2x
DAXON008S 8x,4x
DEFAULT 16X 16x,12x,8x,4x
DEFAULT 2X 2x
DEFAULT 4X 4x,2x
DEFAULT 8X 8x,4x
Dvsn 4x,2x
FUJIFILM02 4x,2x
FUJIFILM03 8x,4x
FUJIFILM04 16x,12x,8x,4x
GSC001 1x
GSC001 4x,2x
GSC002 4x,2x
GSC003 8x,4x
GSC004 8x,4x
IMC JPN R01 8x,4x
INFOD K-R01 1x
INFODISC-R01 4x,2x
INFODISC-R20 8x,4x
INFOSMART01 4x,2x
KIC 00RG200 1x
KIC01RG080 8x,4x
KIC01RG20 4x,2x
LEADDATA01 4x,2x
LGE 1x
LGE04 4x,2x
LGE08 8x,4x
LGE16 16x,12x,8x,4x
LONGTEN 001 1x
LONGTEN 001 4x,2x
MBI 01RG20 4x,2x
MBI 03RG30 8x,4x
MBI 03RG40 16x,12x,8x,4x
MCC 00RG200 1x
MCC 01RG20 4x,2x
MCC 02RG20 8x,4x
MCC 03RG20 16x,12x,8x,4x
MCIG01 1x
MEI 00V001 1x
MEI 00V002 4x,2x
MEI 00V003 2x
MUST 001 4x,2x
MUST 003 8x,4x
MXL RG01 1x
MXL RG01 1x
MXL RG02 4x,2x
MXL RG03 8x,4x
MXL RG04 16x,12x,8x,4x
NAN YA A01 8x,4x
NANYA-JC001 4x,2x
NSDR40 16x,12x,8x,4x
ONIDTECH 4x,2x
OPTODISC 1x
OPTODISCK001 1x
OPTODISCK001 4x,2x
OPTODISCK001 4x,2x
OPTODISCR004 4x,2x
OPTODISCR008 8x,4x
POSG04 4x,2x
PRINCO 1x
PRINCO 1x
PRINCO 4x,2x
PRINCO 4x,2x
PRINCO 4x,2x
PRINCO 4x,2x
PRINCO 4x,2x
PRINCO 4x,2x
PRODISCG02 1x
PVC001001 1x
PVCR001002 4x,2x
ProdiscF01 8x,4x
ProdiscS03 4x,2x
ProdiscS04 8x,4x
ProdiscS05 16x,12x,8x,4x
RITEKG01 1x
RITEKG03 1x
RITEKG04 4x,2x
RITEKG05 8x,4x
RITEKG06 8x,4x
RITEKG07 16x,12x,8x,4x
RITEKM02 4x,2x
SKC Co.,Ltd. 1x
SKC Co.,Ltd. 4x,2x
SONY 1x
SONY04D1 4x,2x
SONY08D1 8x,4x
SONY16D1 16x,12x,8x,4x
TAIYOYUDEN.. 1x
TDKG010000d9 1x
TDKG02000000 1x
TTG01 4x,2x
TTG02 8x,4x
TTH01 8x,4x
TTH02 16x,12x,8x,4x
TYG01 4x,2x
TYG02 8x,4x
TYG03 16x,12x,8x,4x
UTJR001001 4x,2x
VANGUARD01 8x,4x
VDSPMSAB 01 4x,2x
DVD-RW supported media types: 40
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CMCW03 4x,2x
CMCW04 6x,4x,2x
DAXON_RW2X01 2x
DEFAULT 1X 1x
DEFAULT 2X 2x
DEFAULT 4X 4x,2x
DEFAULT 6X 6x,4x,2x
JVC/VictorT7 1x
JVC0VictorD7 4x,2x
JVC1Victord7 6x,4x,2x
JVC_VictorW7 1x
JVC_VictorW7 2x
JVC_VictorW7 2x
MCC 00RW11N9 1x
MCC 01RW11n9 2x
MCC 01RW4X 4x,2x
MKM 01RW6X01 6x,4x,2x
OPTODISCK001 1x
OPTODISCK001 2x
OPTODISCW002 2x
OPTODISCW004 4x,2x
PRINCO 1x
PRINCO 2x
PVCW000001Q9 1x
PVCW00D002K9 2x
PVCW00V00245 2x
Prodisc DW06 4x,2x
ProdiscDVDRW 1x
RITEK000V11A 1x
RITEK004V11 1x
RITEKW01 2x
RITEKW04 4x,2x
RITEKW06 6x,4x,2x
SONY000000U9 1x
TDK401saku=3 1x
TDK501saku]3 1x
TDK502sakuM3 2x
TDK502sakuM3 2x
TDK601saku 4x,2x
TDK701saku 6x,4x,2x
```